The proper balancing of repair and preventive maintenance activities in the determination of coordinated shipboard allowance lists

Zachary F. Landsdowne and Richard C. Morey

Naval Research Logistics Quarterly, 1983, vol. 30, issue 4, 553-572

Abstract: The determination as to the cost‐effective number of spares for given types of items or equipment to be carried on board various types of ships is studied. This spare pool, known as the ship's COSAL, must provide prespecified levels of protection against stockouts for all uses of that item on board the given ship. This article derives and illustrates the methodology for optimally trading off the reduction in the ship's COSAL that can be gained by improving repair/resupply capabilities or by lowering the failure rate of the equipment through more or different types of preventive maintenance. A flexible class of preventive maintenance/repair response functions to cost is studied which are nonlinear and exhibit realistic diminishing returns. Two different types of assumptions are possible regarding the interdependencies of the resupply times across different ship types. A tractable budget allocation method is presented which can be used in a multiitem, multiship, multiechelon repair environment where there is one budget to cover all spares, all repair/resupply, and preventive maintenance activities. The technique incorporates different criticalities of shortages by type of ship and item. It can be used either in a budget building mode or a budget execution mode.

Date: 1983
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Persistent link: https://EconPapers.repec.org/RePEc:wly:navlog:v:30:y:1983:i:4:p:553-572

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